Why does a duplicate key sometimes not work?
Most people think of key copying as the simplest job a locksmith does, and in a sense it is. But a copy that sticks, needs jiggling, or only turns on the third try is almost always an accuracy problem, not a lock problem. The pins inside a lock respond to cut depths measured in thousandths of an inch, so a small error at the cutting machine becomes a big annoyance at your front door.
The usual causes are easy to name. The original key may be worn, so a copy faithfully reproduces the wear. The copy may be made from another copy, which stacks one small error on top of another. The blank may be the wrong one for the keyway, close enough to enter the lock but not close enough to turn it smoothly. Or the cut edges may be left rough, which chews up the pins and the key over time.
A good key cutting service deals with each of those before you leave the counter or the driveway. That is the whole job: identify the key correctly, choose the right blank, cut it cleanly, and test it in the lock it is meant for. Everything else on this page is detail about how we do that for houses, apartments, offices, and mailboxes in and around Moorpark.
How do we handle key duplication, step by step?
Whether you come to our Westwood storefront at 10740 Wilshire Blvd or have one of our mobile vans come to you, the process is the same. We do not rush it, because the checks are what separate a copy that works for years from one that fails the first cold morning.
- Identify the key and the lock. We look at the brand stamp, the keyway profile, and what the key is for: a front door knob, a deadbolt, a padlock, a mailbox, an office door. We also look for any restriction marking.
- Inspect the original. If the key is worn smooth or bent, we say so plainly. A worn original makes a poor template, and sometimes the better answer is a different approach, which may include rekeying the lock so every key matches a clean cut.
- Pick the correct blank. The blank has to match the keyway and the brand family, not just look similar. Using the wrong one is the most common reason for a copy that fits but binds.
- Cut and finish the key. We cut to the original's profile, then remove burrs so the key does not drag on the pins or scrape the inside of the lock.
- Test it in the real lock. A copy that looks right on the bench is not proven until it turns the actual cylinder. For a door with a knob lock and a deadbolt, we test both. If possible we also test the original, to confirm the two behave alike.
- Explain what you have. We tell you what kind of key it is, whether it can be copied again elsewhere, and whether anything about the lock suggests a different fix is worth considering.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Which keys can we copy: house, apartment, office, mailbox, and more?
Different keys call for different handling. Here is how we think about each type, including the cases where the honest answer is that a copy takes extra steps or cannot be done on the spot.
- House key copy and spare house key: standard residential keys for entry knobs and levers are the most straightforward. A spare house key is worth cutting before you need it, not after.
- Duplicate deadbolt key: deadbolts often use a different keyway than the knob on the same door. We check which one your key belongs to and test the copy in the deadbolt specifically, since a deadbolt has to throw a bolt rather than just turn a latch.
- Apartment key copy: many rental keys are standard, but some buildings use restricted or stamped keys that the property manager controls. If yours is one of those, we will tell you what authorization is needed instead of guessing.
- Office key duplication and commercial key duplication: office door keys, file cabinet keys, and desk keys are usually simple. Commercial buildings may use a master key system, where who is allowed to hold a copy is a decision for the system's owner.
- Mailbox key duplication: private mailbox locks are generally small, specific cylinders and are often copyable. Some mailboxes, such as those with locks controlled by the Postal Service, are handled through the post office rather than a locksmith. We will tell you which kind you have, and if the lock itself is the issue, mailbox lock replacement is a separate job.
- High security key duplication: these keys often have unusual cuts, side milling, or special profiles that need the right machine and blank. Our overview of high-security lock systems explains why they are built that way.
- Restricted key duplication: restricted keyways are controlled by the manufacturer, and copies usually require a card, an authorization, or an order through the proper channel. A key stamped 'Do Not Duplicate' is a request, not a physical barrier, but we will not pretend a restricted system is something it is not. Where a key is dealer-only or manufacturer-controlled, we say so up front.
How much does key duplication cost in Moorpark?
We do not quote numbers on a web page, because the same phrase, key copy, covers jobs that are very different in effort. A plain brass house key and a restricted high-security key are both copies, and nobody would expect them to cost the same. What we can do is tell you exactly what moves the cost, so there are no surprises when you call (213) 577-1366.
For many people, bringing the key to the storefront is the lighter-cost option, and for simple keys it is usually the more economical route. If you would rather not make the drive, mobile service exists for that reason, and it carries its own considerations.
- Type of key: standard residential keys sit at one end; high-security, restricted, and specialty keys sit at the other, because of the blanks, the machines, and sometimes the authorization involved.
- Blank availability: common blanks are easy to stock. Less common keyways may need sourcing before the cut.
- Quantity: cutting several keys in one visit is generally more efficient than coming back for each.
- Condition of the original: a clean, readable key is simple to copy. A worn or bent one may need extra work or a different approach.
- Where the work happens: at our storefront or at your door. Moorpark is a good distance from our Westwood base, and travel is a real factor in mobile work.
- Time of day: our phone is answered 24 hours a day, but a late-night or holiday visit is not the same as a daytime appointment.
- Authorization: restricted and controlled keys may need paperwork or manufacturer involvement, which adds steps.
- Other work on the same visit: if you are also having a lock rekeyed or a deadbolt changed, we can often fold the key cutting into the same trip.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Can you duplicate keys at my home or office in Moorpark?
Yes. Key duplication is one of the jobs our mobile vans handle, and it is a practical option if you have several keys to cut, a mobility or scheduling constraint, or a business that cannot send someone away for a couple of hours. Moorpark is about 45 miles from our Westwood storefront, so we do not pretend a visit there is the same as a neighborhood stop. We will tell you plainly how the service works when you call, and our overview of mobile locksmith service explains how the vans operate.
Mobile key duplication works best when you can tell us what you have. Useful details when you call: the brand stamped on the key, whether it is a house, office, mailbox, or padlock key, whether it has any restriction wording, and roughly how many copies you want. If you can text or hold up the key and describe it, we can usually tell you whether a van visit is enough or whether a particular blank or authorization needs arranging first.
Some jobs are better at the storefront. High-security and restricted keys sometimes call for equipment or paperwork that is easier to handle in person. If that is the case, we will say so rather than send a van for a job it cannot finish.
What does key duplication look like across Moorpark?
Moorpark, ZIP 93021, is largely a master-planned suburb, and that shapes the kind of key work people need. The 1980s and 1990s single-family tracts in Mountain Meadows and Peach Hill tend to have a standard set of locks on each home: an entry knob or lever, a deadbolt, and a garage or side-door lock. When a family moves in, the usual sequence is to rekey the locks, then cut enough copies for everyone who lives there. That is where our key work and our lock rekeying service fit together: once the cylinders are set to a fresh key, good copies off that single clean key keep every household key matching.
In Moorpark Highlands, where 2000s homes are mostly under HOAs, the keys that cause trouble are often the less obvious ones: gate keys, garage-side door keys, and mailbox keys. HOA communities sometimes control certain keys, so if a gate or common-area key is stamped or restricted, we will tell you who needs to authorize a copy rather than cut something that may not work as intended.
Older, smaller homes and cottages near High Street in Old Town, and the late 1960s and 1970s homes in Campus Park, may have older hardware with worn keys that have been copied several times over the years. Those are the situations where a copy of a copy is most likely. Bringing us the oldest key you have, and the lock if you can, helps us decide whether a fresh cut will be accurate or whether the lock itself is due for attention.
Condo and apartment stock is limited and concentrated near Los Angeles Avenue and Moorpark College, and rentals near the college generate a steady need for spare keys. A spare cut in advance can save you from the situation covered in our apartment lockout page. If you are a property owner handling several units, our locksmith for landlords service explains how we help keep keys organized between tenants.
Businesses along the Los Angeles Avenue (SR-118) corridor often need office key duplication for new staff, or extra keys for a storeroom or file cabinet. Larger offices may have a master key system, where copies are controlled by whoever manages the system. Our commercial locksmith page covers the broader business side.
One local point is worth knowing. Moorpark's inland valley setting brings hot, dry summers with seasonal Santa Ana winds, and heat cycles can cause doors and frames to expand, particularly on south- and west-facing entries in tract homes. A door that binds in the afternoon can make a perfectly good key feel stiff. When we test a duplicate, we are looking for a smooth turn, and if the key works easily on a cool morning but fights you in afternoon heat, the problem may be the door and frame alignment rather than the copy.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Why call Wilshire Lock & Key for key duplication?
We have been in business since 1987, and we serve 140 cities across Los Angeles and Ventura counties, including Moorpark. That time matters for a job like key copying, because keys and hardware have a long history, and having seen a wide range of old and new locks helps in recognizing what you are holding.
We are one company, with a storefront at 10740 Wilshire Blvd in Westwood and our own mobile vans. There is no dispatch middleman between your call and the person doing the work. The phone is answered 24 hours a day, 7 days a week, year-round at (213) 577-1366, and the work is done under the oversight of David, the owner and lead technician.
California requires locksmith companies to hold a BSIS LCO license, and you should ask any locksmith, including us, for it before they begin work. A reputable company will not mind the question.
Finally, we try to be straight about limits. If your key is restricted and needs authorization, we will say so. If the original is too worn to copy well, we will say that too. If the real problem is the lock, not the key, we will tell you before cutting anything.
When is a copy not the right answer?
Sometimes cutting another key is not the best move. If you have just moved in, or if keys have gone to former tenants, roommates, or contractors, copying an existing key only adds to the number of people who can open your door. In that case, rekeying the lock is the cleaner approach, because it makes old keys stop working, and then a new set can be cut off the fresh key.
If the key is broken in the lock, that is a different job from duplication, and we would handle it separately. If your key is worn so badly that the lock itself has started to wear, a copy may only delay the problem. And if you have lost your only key, a copy is not possible without something to work from, so the lock may need to be opened, rekeyed, or replaced.
We would rather you know that before paying for a copy that will not solve what is actually bothering you.
Frequently asked questions
Can you copy a key stamped 'Do Not Duplicate'?
It depends on the key. That stamp is a request, not a physical lock, and many such keys are ordinary and can be copied. A truly restricted key, with a controlled keyway, usually needs authorization from whoever holds the system. We will look at your key, tell you which kind it is, and explain what is needed. If it requires permission from a property manager, HOA, or manufacturer, we will say so.
Do I need to come to your Westwood storefront, or can you come to me in Moorpark?
Either works. We have a storefront at 10740 Wilshire Blvd in Westwood and mobile vans that serve Moorpark, which is about 45 miles from our base. For a single simple key, the storefront is often the more economical route. For several keys, or for a home or office where you cannot leave, call (213) 577-1366 and we will talk through the mobile option.
Can you duplicate high-security or restricted keys?
Often, but not always on the spot. High-security keys can need specific blanks and machines, and restricted ones may need an authorization card or manufacturer involvement. Some systems are dealer-only. Tell us the brand on the key when you call and we will confirm whether we can do it, what is required, and whether a visit to the storefront makes more sense.
Can you copy a mailbox key?
Many private mailbox keys can be copied. Some mailboxes, such as those with locks controlled by the Postal Service, are handled through the post office instead. If you are not sure which you have, describe or show us the key and we will tell you. If the lock itself is the problem, replacing it is a separate job.
Why does my new copy stick or need jiggling?
Usually the cause is accuracy: a worn original, a copy made from another copy, the wrong blank, or burrs left from cutting. Occasionally it is the lock, or the door and frame, especially in warm weather. Bring the copy, the original, and ideally the lock, and we can tell which of these is behind it.
How many spare keys should I have cut?
That depends on your household or office, but fewer, cleaner copies are better than many scattered ones. Think about who really needs one: each adult at home, perhaps a trusted neighbor or family member, and one stored safely. For offices, key control matters more than quantity, because every extra copy is another one to keep track of.
Can you copy office and commercial keys for my business near Los Angeles Avenue?
Yes, standard office, storeroom, and cabinet keys are straightforward. If your building uses a master key system, copies are typically controlled by whoever manages it, and we may need their approval. Call (213) 577-1366 with the key's brand and what it opens, and we will tell you how to proceed.
I just moved in. Should I copy the keys I was given or rekey?
Usually rekey first. You cannot know who else has a copy of the keys you were handed, and copying them only multiplies the number. Rekeying makes the old keys stop working, and then we can cut a fresh set for everyone in the household from the new key.
More locksmith help in Moorpark
Key Duplication near Moorpark
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.
